This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A103952 #11 May 21 2025 01:23:13 %S A103952 9,27,4,8,9,214375,8,9,25,2197,27,16,49,30459375,16,25,25,27,27,36,25, %T A103952 49,27,25,125,27,36,32,225,6889,32,36,49,899236854961,36,72,64,1369, %U A103952 64,49,49,518436000667,243,108,49,289,72,49,81,675,100,196,125,81,64,64 %N A103952 Smallest powerful number such that a(n)-n is also powerful. %C A103952 Sister sequence of a(n)-n is given by A076444. %C A103952 a(110) > 10^22. - _Donovan Johnson_, Nov 19 2011 %H A103952 Donovan Johnson, <a href="/A103952/b103952.txt">Table of n, a(n) for n = 1..109</a> %F A103952 a(n) = A076444(n)+n. %Y A103952 Cf. A076444, A074954. %K A103952 nonn %O A103952 1,1 %A A103952 _Max Alekseyev_, Feb 22 2005 %E A103952 Offset corrected by _Donovan Johnson_, Nov 19 2011